Annual report pursuant to Section 13 and 15(d)

Leased Properties and Leases - Amortization and Depreciation Expense (Details)

v3.6.0.2
Leased Properties and Leases - Amortization and Depreciation Expense (Details) - USD ($)
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Sale Leaseback Transaction [Line Items]      
Depreciation Expense $ 3,353,821 $ 3,329,063 $ 592,514
ARO Accretion Expense 726,664 339,042  
All Properties [Member]      
Sale Leaseback Transaction [Line Items]      
Depreciation Expense 18,350,454 15,021,948 12,541,372
Amortization Expense - Deferred Lease Costs 91,932 76,498 61,369
ARO Accretion Expense 726,664 339,042 0
Net Deferred Lease Costs 963,532 1,055,465  
GIGS [Member]      
Sale Leaseback Transaction [Line Items]      
Depreciation Expense 8,605,506 4,317,769 0
Amortization Expense - Deferred Lease Costs 30,564 15,130 0
ARO Accretion Expense 726,664 339,042 0
Net Deferred Lease Costs 290,447 321,011  
Pinedale [Member]      
Sale Leaseback Transaction [Line Items]      
Depreciation Expense 8,869,440 8,869,440 8,869,445
Amortization Expense - Deferred Lease Costs 61,368 61,368 61,369
Net Deferred Lease Costs 673,085 734,454  
Portland Terminal Facility [Member]      
Sale Leaseback Transaction [Line Items]      
Depreciation Expense 843,084 1,235,369 1,390,236
Eastern Interconnect Project [Member]      
Sale Leaseback Transaction [Line Items]      
Depreciation Expense 0 569,670 2,278,680
United Property Systems [Member]      
Sale Leaseback Transaction [Line Items]      
Depreciation Expense $ 32,424 $ 29,700 $ 3,011